Schmidt, Jan Peter MPI for Comparative and International Private Law, Max Planck Society;
https://opil.ouplaw.com/display/10.1093/law:epil/9780199231690/law-9780199231690-e655 (beliebiger Volltext)
Schmidt, J. P. (2009). MERCOSUR. In Max Planck Encyclopedia of Public International Law, http://www.mpepil.com/subscriber_article?id=/epil/entries/law-9780199231690-e655, 20.03.